To understand why Harrison Smith seems to be at his happiest when crashing into ballcarriers, why the Vikings safety throws his body around on a football field every Sunday, you need to give his mother a call.
Susan Smith will gladly tell you story after story about young Harrison, the daredevil of a family with three boys and one girl, though she hopes he won't get too embarrassed that she is sharing them with you.
There was the time at Natalie's fifth birthday party when 2-year-old Harrison roller-skated full-speed into the wall, then dusted himself off and did it again and again, a smile on his face the whole time.
Or the time when Susan taught Harrison to ride a bike, so his older brother couldn't pedal way from him anymore. And as soon as she let go of the handlebars, he sped down the street, over a curb and into the neighbor's bushes, before springing up and explaining, "Mom, I had to stop somehow!"
She remembers when Harrison chose soccer over peewee football one year and was miserable about it. Susan and Harrison's father, Steven, looked in the yard one day and saw Harrison in full football gear, spinning, juking and tackling trees.
"He never was afraid of contact, shockingly," Susan says with a laugh. "Never."
That won't seem shocking to anyone who has watched Smith during his third season with the Vikings. The 25-year-old has thrived in a Swiss Army knife-type role for new head coach Mike Zimmer, who is putting Smith in position to slam into pretty much every player allowed to touch the football. Through six weeks, Smith has generated Pro Bowl buzz, intercepting three passes while becoming one of the leaders of an improved Vikings defense.
"The thing I like the most about Harrison is he's a good competitor," Zimmer recently said. "He's got a lot of toughness in him, a lot of grit."